Cellulose solvent



i .5 Stateof New and the compositions obtained by'their use.-

' said esters.

volatile admixture such as ether.

,2 dissolve in the more or p I g GAIL MERSEREAU, QF NEW YORK, N..'Y.,,ASSIGNOR T conrm, or new Yoax, n. IL, A conrona'rrqn or i em -OELLULOSEsopvnu'r. I I 1,308,803, v Speeiflcation or Letters Patent. I PatentedJuly 8, 1919, v i. no Drawing. Application filed September 10, 1913,Serial mvsazzi. Renewed January 2,1910. 1 serial 1 To all whom it mayconcern Be it 'known that I GAIL MEBBEREAU, a citizen of the Unitedtates, and resident of New York, in the county of York, have inventedcertain new and useful Improvements in Cellulose Solvents, of which thefollowing is a specification.

'My invention relates to cellulose solvents It has long been known thatesters of cellulose such as acetyl and nitro cellulose were soluble incertain dividual constituents were nonsolvents of It has been found a.great handicap in using such solutions to have to use either solidssuch as camphor which remained in the solute when the other solventIto-210,074.

New" York and mixtures of which the indissolve certain celluloseacetatesivery readily. I I

o crinmce'ifnnvmoritfnirr. I

My heavy oil as it comes from the-reac--' .with two and a half parts byfvolumeof methyl alcohol; This forms an excellent 501- tion apparatusproducing'itmay be mixed vent for 'acetyl cellulose. A larger proporon 1heavy mixture. Ethyl alcohol will give about the 'same result, and alarger proportion of aloo-'.=

.hol will decrease the solvent action of-the mixture. I

. I have also I parts of my heavy oil and ethyl alcohol forms anexcellent solvent for acetyl celluose.

The fractions of my heavy oil boiling bevolatilized, or to'have to usean extremely... low, 120 0. give about the same result as the In other.words the great desideratum has been a solvent of medium volatility. 'Ihave found that certain of the cellulose 'esters such as certainacetates in particular-will readily less complex chlorin compoundcontaining" heavy" oil formed when'petroleum oils are pyrolized and thegaseous product is thentreated with chlorin to form'largely additionproducts, provided such heavy oil is mixed with a littlealcohol or.suitable'cosolvent- Such a heavy oil is the product of a processdisclosed in my ap- -'plication executed of even date herewith, and ofwhich the specification Serial 5 '#790-,080? was filed on even dateherewith. In said application I have shown how the gases produced bypyrolizing petroleum at a temperature of 700 C. .in a narrow"tube may betreated with chlorin inthe darkin the intimate presence of a coolingmedium, such as water, addition products which form thish'eav y oil.

to produce almost exclusively I have found that such cellulose estersare dissolved-even more readily bythe fraction I of my heavy oil whichboils between 125 and 150 C. This fraction appears to consist of acomplex mixtureof several compounds not separable by any'known method oftreatment. This fraction, therefore, while separable into fractionshaving various boiling points, is quantitatively speaking unanalyzable.i

For exam '10 said fraction when mixed with 25% o ethyl alcoholby weightwill .i'unfractionated heav have found that the motion of my heavy oilboiling between as a substitute tile liquids for mixing with alcohol toproduce a solvent for such cellulose esters as Y so It will be notedthat my heavy oil and any nitro cellulose.

110 and 120 can be used for the ordinary more volaof my chlorin compoundcontaining 011 decreases the solvent action of the found that a mixtureof equal oil. For example, If I have described certain detailed '1 -J;.should be noted that r i 1. A composition of matter. comprising theherein described mixture of compounds of chlorin, carbon and hydrogenwhich forms aheavy oil of which a large part is "inseparable into its bymethods-now known, a certain group of I the more volatile of saidcompounds being the equivalent in volatility of the standard fvolatilesolvents of nitro cellulose, said com-- pos1t1on also comprising analcohol and cel- 1 lulose "ester.

'2. A composition-"ofmattercomprising a- -cellulose esteryand'a complexliquid result ing from addinginorgamc acid radicals tothe mixtureofunsaturated hydrocarbons contained in oil' gas. 3,- A composition ofmatter, comprising a component compounds cellulose ester and a comple'ikliquid resulting from adding chlorin inthe dark to the mixture ofunsaturated hydrocarbons contained in oil gas.

- 4. A composition of matter comprising a complex fraction of achlorin-containing compound heavy oil of which a large part 1s-"inseparable into its component compounds by methods now known,saidfraction being substantially non-hygroscopic, said composition alsoincluding an alcohol, and a cellulose ester. I

1 ,sos,sos

5. A composition of matter comprising a

